Oil-burner



W. R. RAY.

OIL BURNER. I APPLICATION FiLED SEPT-25,1916. RENEWED NOV. 26,1919. 1,373,149.

Patented Mar. 29, 1921.

3 SHEETS-SHEET 1.

. INVENTOR WiZZiamR.Ra BYmf W. R. RAY.

OIL BURNER.

APPLICATION FILED SEPT.25, I916- REHEWED NOV. 26, I919- Patented Mar. 29, 1921.

f H -52 T A WW? N 1] IN VENTOR W. R. RAY.

OIL BURNER.

RENEWED NOV. 26, 1919.

APPLICATION FILED SEPT.25, I9I6. .,373,149. Patented Mar. 29, 1921.

3 SHEETS-SHEET 3- William R36 ber 30, 1914, Patent No.

. citizen of the United States,

UNITED STATESPATENT OFFICE."

WILLIAM R. BAY, OF SAN FRANCISCO, CALIFORNIA.

Application filed September 25, 1916, Serial No. 122,014. Renewed November 26, 1919. Serial No. 340,804.

To all whom e't may conccm c it known that I, VILLIAM R. RAY, a residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Oil-Burners, of which the following is a specification.

This invention relates to oil burners and pertains especially to rotary burners of the type shown and described in my pending application, Serial No. 874,754, filed N ovem- 1,193,819, granted August 8th, 1916.

One of the obj ects of the present invention is to provide a simple substantial motor driven oil burner of the rotary type in which I the oil is ejected and atomized by the combined action of centrifugal force and an air blast, and particularly to provide means for imparting a swirling movement to the air in a direction opposite to the line of projection taken by the oil when centrifugally discharged.

Another object of the invention is to provide a novel mounting for the motor, and furthermore to provide a jacket exterior of the motor casing through which the oil is passed to permit cooling of the motor and heating of the oil before it is delivered to the atomizer. J

Further objects will hereinafter appear.

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawing in which Figure *1 is a central longitudinal section of line ll Fig. 2. i

Fig. 2 is an end view of the burner.

Fig. 3 is a plan view ofthe burner.

Referring to the drawings in detail, A indicates the front end of an ordinary fur- .nace, and 2, the opening which is generally Suitably seclosed by the furnace door. cured to the furnace front, is a plate 3 pro- .vided with conical extension 4 which pro- I jects into the opening 2 to form a metallic the purpose of supporting lining for same. Formed integral with 'the plate 3 or-otherwise secured to same, 1s a pair of hinge lugs 5 which are prov ded for a fancasing generally indicated at B. This casin consists of a housing 6 and a front cover secured thereto by means of screws 8. Formed integrally with the housing 6 is a pair of hinge lugs 9 which cooperate with the lugs 5 to Specification of Letters Patent.

OIL-BURNER.

form a hinge about which the fan casing B as a whole, may be swung. Secured to the cover by means of screws v 10 is a bearing extension 11 and secured to the outer end of sald extension by means of screws 12, is an electrlc motor generally indicated at C. ThlS motor is provided with a hollow shaft 13 which extends through the bearing extension 11, being supported therein by means of ball bearings 14 and 15, the outer end of shaft being extended as shown to provide a support for a fan 16 and an atomizing cup 17. The cover section 7 is provided with an air intake opening 18 to which the air is adan enlarged portion 20 of the bearing extension and the housing proper is provided with a discharge opening 21 which is extended by securing to the housing 'a tapered nozzle 22 which is sufliciently long to inclose the atomizing cup 17 and form in conjunction therewith, an annular discharge passage for the air discharging from the fan. Se-

cured interior of the housing is a circular plate 23 of smaller diameter than the interior of .the housing. This divides the housng into two compartments 24 and 25, the

compartment 24 containing the fan 16 while the compartment 25 serves as an air passage to receive the air discharging from the fan, the air being thereby-deflected down or inwardly to the central discharge opening 21 with connected nozzle 22,

The burner here shown is particularly designed to handle low gravity fuel oils and this oil is delivered to the atomizing cup 17 I indicated at 31. I

Another novel feature of the present invention is the mounting and construction of the motor casing. Referring to Figs. 1 and 2 it will be seen that. the casing of the motor consists of a single casting 32 which 'is secured to the. bearing extension 11 by means gear drive generally 70 mitted through perforations 19 formed in of the screws 12. This casting is provided with a jacket or annular channel 32 which practically speaking surrounds the whole casing. The casing proper however, is split as at 33 for purposes hereinafter to be described, and therefore necessitates a division in the channel or jacket 32 such asshown. This annular channel is provided for' the purpose of permitting the cooling of the motor and heating of the oil to be atomized. Extending through the hinge lugs 5 and 9 are a pair of hollow pintle members 34 and 35, the inner ends of which are connected with a centrally divided T-fitting indicated at 36. Oil from any suitable source of supply enters the lower half of the double-T through a pipe 37 and then passes down through the, hollow pintle 34 which is connected with the motor casing jacket or channel 32' at the point indicated at 38 by means of a pipe 39. The oil then passes around the jacket in the direction of arrow which as before stated connects with the.

upper side of the double T indicated at 36'. It then passes through a pipe 43 which connects with the source of supply, thereby permitting a return or overflow action for any surplus amount of oil delivered by the pump. The stationary oil delivering pipe 27 is secured in an extension 44 formed on the outer covered section 45 of the motor and a plurality of adjusting screws 46 passing through this extension. permits the pipe 27 to be adjusted with relation to the interior of the hollow motor shaft, in this manner preventin frictional contact between the same. he motor casing 32 is a one piece annular casting, split atone point,

as shown at 33, to permit it to be clamped into engagement with the stator. Thls operation is performed by tightening the bolts at 33 (see Fig. 2) and thus reducing the inner diameter of the split annular casing until its inner face is held in firm engagement. with the stator ring. The stator ring may thus'easily beremoved for repair by simply unscrewing the bolts at 33. split annular casing will then spring back to its normal shape and release the stator ring. 1

Another important feature of the present invention is the provision of a plurality of 'angularly disposed guide vanes 47. These are suitably secured in-the nozzle 22 'at a point where they surround the atomizing cup 17 and are in this manner adapted to impart" The a swirling motion to the discharging air blast in adirection opposite to the turning movement of the atomizing cup. The importance of this feature will later be described.

In operation it will only be necessary to close a switch not here shown to start the motor. This when started, turns the hollow shaft upon which the fan 16 and atomizing cup 17 are secured with sufiicient speed and velocity to cause the desired volume of air to discharge through the nozzle 22. Oil impelled by the pump 29 is at the same time forced through the jacket 32 of the motor casing from where it is finally delivered through pipes 41 and 27 into the atomizing cup where it is projected by centrifugal force in the form of a thin spray. This spray meets the outwardly discharging annular column of air blast from the nozzle 22 and is thereby carried inaforward direction into the furnace proper. The swirling action of the air in the direction opposite to that of the discharging oil spray, breaks up the oil particles and permits the mixture as a whole consisting of oil vapor andair, to discharge in a forward direction where it is ignited in any simple manner. The delivery of oil to the cup is automatically attended to, once the flow is regulated by the valve 28 as the pump 29 is directly connected with the motor and will therefore start the flow of oil to the cup the moment themotor begins to operate. The passage of the oil through the motor jacket previous to its delivery to the cup is of great benefit as it permits the heat of the motor to be transmitted to the oil, in this manner rendering it more easy to atomize, the motor being at the same time cooled, in this manner permitting it to run for hours and days at atime' without any danger of burning or overheating. The temperature of the motor proper. and the oil passed therethrough, may furthermore be regulated to a great extent by permitting a greater or lesser volume of oil to constantly discharge through the overflow provided by the pipes 42, 43, 35. The

mounting of the motor by securing it to the bearing extenslon 11 hereshown is also an important feature of the present inyention as it entirely eliminates bearing within the motor or supporting brackets and other devices heretofore generally used. It furthermore permits the employment of anentirely inclosed motor, and in this manner preventing the admission of dust and grit and furthermore providesan ideal. bearing support which permits perfect alinement and balancing of all the revolving parts. i

The materials'and finish may be as the eXperience and judgment of the manufacturer dictate. v I

I wish it understood that various changes inform, proportions, and minor details of construction may be resorted to within the scope of the appended claims and that I do not wish to limit myself to the specific design or construction here shown.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 2- 1. In a centrifugal burner. the combination with a nozzle of a centrifugal atomizer mounted in the nozzle and spaced therefrom to form an annular discharge opening. means for delivering oil to the atomizer, means for rotating the atomizer. means for forcing an air current through the nozzle between the atomizer and the nozzle and a plurality of stationary guide vanes secured within the nozzle and surrounding the atom izer. said vanes being angularly disposed to impart a swirling movement to the air in a direction opposite to that of oil discharging from the atomizer.

2. In a motor driven oil burner. a bearing member having an annular flange formed on each end. a shaft journaled in-said member extending through each end. a motor secured to the annular'flange of the one end of the bearing member. the armature of said motor being secured 011 the projecting shaft end. a fan casing secured on the opposite annular flange of the bearing member. a fan secured on the projecting shaft end within the fan casing. a nozzle forming a discharge opening for the fan casing. a centrifugal atomizing cup secured on the end of the shaft within the nozzle. and means for delivering oil to the atomizing cup.

3. An oil burner comprising a fan casing having an air discharging nozzle formed on one side and a bearing member secured on the opposite side. a motor secured to said bearing member. said bearing member supporting the motor shaft and armature. a fan secured on the shaft within the fan casing. a centrifugal atomizing cup secured on the shaft within the air nozzle. and means for delivering oil to the atomizer.

4. An oil burner comprising afan casing having an air discharging nozzle formed on one side and a bearing member secured on the opposite side. a motor secured to said bearing member. said bearing member supporting the motor shaft and armature, a fan secured on the shaft within the fan. casing, a centrifugal atomizing cup secured on the shaft within the ail-nozzle. an oil circulating jacket formed on the motor casing, means for forcing oil through said jacket, and means delivering the oil to the atomizer after passing through the jacket.

5. An oil burner comprising a fan casing having an air discharging nozzle formed on one side and a bearing member secured on the opposite side. a motor secured to said bearing member. said bearing member suping cup.

porting the motor shaft and armature. a fan secured on the shaft within the fan casing. a centrifugal atomizing cup secured on the shaft within the air nozzle, an oil circulating jacket formed-in the motor casing. a pump driven by the motor shaft supported on the bearing member adapted to circulate oil through the jacket. and means for delivering the oil from the jacket to the atomizer.

6. An oil burner comprising a fan casing having an air discharging nozzle formed on one side and a bearing member secured on the opposite side. a motor secured to said bearing member. said bearing member supporting a hollow motor shaft and armature. a fan secured on the shaft within the fan casing. a centrifugal atomizing cup secured on the shaft within the air nozzle. and means for delivering oil to the atomizer through the hollow motor shaft.

7. An oil burner comprising a fan casing having an air discharging nozzle formed on one side and a bearing member secured on the opposite side. a motor secured to said bearing member. said bearing member supporting a hollow motor shaft and armature. a fan secured on the shaft within the fan casing. a centrifugal atomizing cup secured on the shaft within the air nozzle. an oil circulating jacket formed in the motor casing. a pump driven by the motor shaft supported on the bearing member adapted to circulate oil through the jacket. and means for conveying the oil from the jacket through the hollow motor shaft to the atomizer.

8. An oil burner comprising a rotary atomizer. a motor adapted to revolve said atomizer, a jacket on the motor. means for circulating oil through said jacket to cool the motor and to heat the oil. and means for delivering the oil when heated to the atomizer.

9. An oil burner comprising a rotary atomizer, a motor adapted to revolve said atomizer. a jacket on the motor. means for circulating oil through said jacket to cool the motor and to heat the oil. means for delivering the oil when heated to the atomizer. a nozzle surrounding the atomizer and spaced from same. and means for forcing air through said nozzle.

10. An oil burner comprising an electric motor. a shaft in the motor. a centrifugal atomizing cup on the shaft, a nozzle surrounding the atomizing cup and spaced from same to form an annular air passage, means for forcing air through said nozzle, a jacket on the motor. means for circulating the oil through the jacket to cool the motor and to heat the oil. and means for delivering the oil when heated to the atomiz- 11. n oil burner comprising an electric motor, a shaft in the motor. a; centrifugal atomizing cup on the shaft, a nozzle surrounding the atomizing cup, a fan on the shaft adapted to force air through the nozzle exterior of the atomizing cup, 3'. jacket on the motor, means for circulating 011 through the jacket to cool the motor and to heat the oil, means for delivering the oil when heated to the atomizing cup and a plurality of angularly dlsposed stat onary guide vanes secured within the nozzle adapted to discharge air in a direction opposite to the to cool the motor and; heat the oil, and

' means cooperating with the tubular motor shaft to deliver'oil through it to the atomizingcup.

13. The combination with a motor driven oil burner, of a cooling jacket surrounding -the motor, and means to circulate the oil through said jacket to cool the motor and.

ing"cup secured on the opposite end of the heat the oil before said-oil is delivered to the burner. s

14. An oil burner mounting comprisinga central bearing member, a base for sand member, a motor housing secured on one end of the bearing member and supported entirely thereby, a fan casing secured on the opposite end of the bearing member, a shaft journaled 1n the bearing member and ex-- tending through the fan and motor housings respectlvely, an armature secured on the shaft within the motor housing, an atomizshaft, and means for delivering oil thereto.

I 15. oil --b'ur1 1e r mounting comprising a,

central bearing member, a fan casing to 4 which one end of the bearing member is secured, a driving member secured on the opposite end of the bearing member and supported thereby, a shaft extending through the bearing member and the fan casing and driven by the driving member, a fan on the shaft, a cup atomizer on the shaft and means for delivering oil thereto.

16. An oil burner mounting comp-rising a central bearingmember, a fan casing to which one end of the bearing member is secured, a driving member secured on the opposite end of the bearing member and supported thereby, a shaft extending through the bearing member and the fan casing and driven by the driving member, a fan on the shaft, a cup atomizer on the shaft and meansfor delivering oil thereto, a nozzle surrounding the atomizing cup and means for delivering air from the fan through the nozzle exterior of the cup.

17. An oil burner mounting comprising a v central bearingv member, a shaft journaled therein, a driving end of the bearing member adapted to drive the shaft, an atomlzing cup on the opposite end of the shaft and means for delivering oil thereto. i

'18. An oil burner mounting comprising a central bearing member, a hollow shaft j ournaled therein, a driving member secured to one end of the bearing member adapted to drive the shaft, an atomizing cup on the opmember secured to one' posite' end of the shaft, and means for 'dey livering oil to the atomizer through the hollow shaft.

In testimony whereof I have hereunto set.

my hand in the presence of two subscribing witnesses. 1 v

' WILLIAM R. RAY. -Witnesses:

.JonN H. HERRING,

W. W. HEAIEY. 

